I dunno. I think bracing things up has the potential to make a good bit of difference. The unibody is essentially split down the middle by the trans tunnel, which I imagine greatly affects structural integrity. Seems like bracing those two sides together can make a difference.

An S54 Z3M roadster owner I know swears the front strut tower brace he installed made a huge difference.

I've seen a braced up m3 (front strut brace, rear tower brace, and cross brace) where the owner put the oem jack in the front jack spot, and lifted the entire side of the car. The was hardly any flex in the thing at all.

__________________

-Alan

Member #2 of the Boston Green Mafia BMW-CCA #457574

1995 BG M3(sold)2000 TiAg 4.4l X5(sold)

-2000 F250 V10
-2004 GMC Yukon Denali

-I do the things today that others won't do, so I will have the things tomorrow that other won't have....